Examine source code of AdaptaShadown

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Adapta",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(250, 251, 252)",
      "toolbar_text": "rgb(38, 50, 56)",
      "frame": "rgb(231, 233, 234)",
      "tab_background_text": "rgb(38, 50, 56)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(38, 50, 56)",
      "tab_line": "rgb(231, 233, 234)",
      "popup": "rgb(250, 251, 252)",
      "popup_text": "rgb(38, 50, 56)",
      "icons_attention": "rgb(64, 174, 191)",
      "popup_highlight": "rgb(0, 188, 212)",
      "tab_selected": "rgb(236, 238, 240)",
      "tab_loading": "rgb(231, 233, 234)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{44ff6d31-509d-451f-943b-f6a60bab8455}"
    }
  }
}